/* Copyright 2009 Requirements Management System 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.mags.remas.model.commons.checker;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import org.apache.commons.validator.GenericValidator;

/**
 * 
 * @author Mario Gaitan
 *
 */
public class ScriptReader {
	public static String readScript(String resourceName) {
		BufferedReader reader = null;
		String script = null;
		try {
			if(GenericValidator.isBlankOrNull(resourceName))
				throw new RuntimeException("resourceName can't be empty");
			StringBuffer fileData = new StringBuffer();
		    reader = new BufferedReader(new InputStreamReader(ScriptReader.class.getResourceAsStream(resourceName)));
	        char[] buf = new char[1024];
	        int numRead = 0;
	        while ((numRead = reader.read(buf)) != -1) {
	            String readData = String.valueOf(buf, 0, numRead);
	            fileData.append(readData);
	            buf = new char[1024];
	        }		    
	        script = fileData.toString();
		} catch(NullPointerException e) {
			return "";
		} catch(Exception e) {
			if(e instanceof RuntimeException)
				throw (RuntimeException)e;
			else
				throw new RuntimeException(e);
		} finally {
			try {
				if(reader!=null)
					reader.close();
			} catch(Exception ex){/*IGNORE EXCEPTION*/}
		}				
		return script;
	}
}
